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①非同期処理をおこなう関数を宣言
const関数名=async()=>{constmessage='GitのユーザーIDは';consturl='https://api.github.com/users/taizo-pro'②awaitをつけ、fetchが実行完了するまで次に進まなくさせる
// jsonにreturnされた値が入るconstjson=awaitfetch(url).then(res=>{console.log('非同期処理成功時のメッセージです')returnres.json()}).catch(error=>{console.error('非同期処理失敗時のメッセージです。',error)returnnull});constusername=json.login;console.log(message+username)}関数名()Register as a new user and use Qiita more conveniently
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